diff --git a/docs/.envrc b/docs/.envrc
index 484fbdf91..1eab3d8dc 100644
--- a/docs/.envrc
+++ b/docs/.envrc
@@ -1,7 +1,8 @@
 # shellcheck shell=bash
 source_up
 
-watch_file $(find ./nix -name "*.nix" -printf '%p ')
+mapfile -d '' -t nix_files < <(find ./nix -name "*.nix" -print0)
+watch_file "${nix_files[@]}"
 
 # Because we depend on nixpkgs sources, uploading to builders takes a long time
 use flake .#docs --builders ''